Credit: The Associated Press

FILE -In this Friday, March 22, 2013, file photo, a girl plays near a screen showing the stock prices at the Korea Exchange in Seoul, South Korea. The Federal Reserve’s super-low interest-rate policy has inflated a slew of dangerous asset bubbles, just this year, the S&P 500 has jumped 26 percent. (AP Photo/Lee Jin-man, File)

WASHINGTON — The Federal Reserve's super-low interest-rate policies have inflated a slew of dangerous asset bubbles. Or so critics say.

They say stocks are at unsustainable prices. California homes are fetching frothy sums. Same with farmland, Bitcoins and rare Scotch.